Finding the Fourth Proportional to 10,571.42, 15,855.91 and 3,551.15

Step by Step Solution

1. Step 1: Write the proportion equation
   10,571.42 : 15,855.91 = 3,551.15 : x
2. Step 2: Convert to fraction form
   10,571.42/15,855.91 = 3,551.15/x
3. Step 3: Cross multiply
   10,571.42x = 15,855.91 × 3,551.15
4. Step 4: Simplify right side
   10,571.42x = 56,306,714.80
5. Step 5: Solve for x
   x = 56,306,714.80/10,571.42
6. Step 6: Final answer
   x = 5,326.32